What if God doesn't exist? What if humanity is not the center of the
universe? What if there is no absolute truth?
Here are some texts by free-thinking pioneers of our era that
address these questions.

The Da Vinci Notebooks
by Leonardo Da Vinci, tr. by Jean Paul Richter [1883]First publication on the Internet of all of Da Vinci's
notebooks with all of the images in context.
Get an insight into the real Da Vinci.

About the graphic:
When Galileo turned his telescope on Jupiter, he
discovered that it has four moons which revolve around it.
From this he inferred that the Earth and the other
planets could revolve around the Sun. This was one of the
key discoveries which started an
intellectual revolution which resonates to this day.